Plate-cutting apparatus



C. K. BRYCE.

P'LATE CUTTING APPARATUS.

APPLICATION FILED SEPT.II.19I7.

Patented Sept. 30, 1919.

' 2 SHEETS-SHEETI W m w a Mv C. K.BRYCE.

PLATE CUTTING APPARATUS. APPLICATION FILED SEPT. 11. 1917.

11,317,425 Patented Sept. 30,1919.

2 SHEETSSHEET 2. My

CHALMERS K. Button, on (among; NEW

annsnv, nssienoa r0 oxwnnn Acnmnnn COMPANY OF NEWARK, NEWJERSEY, A CORPQRATION OF WEST VIRGINIA.

' rrarn-cnr'rmenrrnnarus.

To all whom it may concern: Be it known that I, CHAL'MERs K. Baron,

a citizen of the United States, residing at Cranford, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Plate-Cutting Apparatus, ofwhich the following isa full, clear, and exact description.

This invention relates to apparatus for cutting metal plates and sheets'by means of ablowpipe, for, example an oxy -acetylene or oxyhydrogen torch, ,andhas for .its chief object the provision of a simple device, preferably hand-actuated, by whicha straight or circular out can be easily and accurately made. To this and -,otherends theinvention consists in the novel features and combinations hereinafter described. One embodimentf'of the invention is illustrated in the annexed drawings, in which-- /Figure 1 is a perspective view showing the apparatus in use for making a circular cut. i

Fig. 2 is a ratus making astraight-line cut.

Fig. 3 is an end view on a larger scale,

without the blowpipe. Fig. 4 is a side view on the same scale,

with one of the crank disks omitted.

The blowpipe and other operative parts of secured to one end of a sleeve 12. The support has an arched recess 13 to receive the til manner.

worm-gear 15 rigidly connected to it and,

rubber tired tractor-wheel 14:, rotatably mounted in the recess in any convenient The tractor wheel is rotated by a driven-by a worm 16. The latter is rotated by either of two crank-disks '17 fixed on the ends of the worm shaft. Avertical-handle 18 on top of thesupport permits the user to press the tractorwheel firmly down upon the plate which is to be cut, so as to give the necessary tractive eifect.

The blowpipe 23 isv mounted in a. carrier 19, fixed on the outer end of the member 10, and has a rack 20 meshing with a pinion 21 j ournaled in said carrier. f The blowpipe can thus be adjusted vertically, by rotating the thumb-wheel'22 (Fig. 1), to position its nozzle at the proper distance from the work.

On the end of the sleeve 12 opposite'to the blow-pipe is a yoke 24;, having at the $peciflcation of Letters Patent.

similar view showing the appa 2 Patented Sept. 3%, 1919.

11,1917. Serial No. 190,784.

ends of its arms two knife-edge'rollers 25 of hardened steel.

The axes of the rollers are parallel to the axis of the tractor-wheel 14. I The yoke is rotatively and detachably mounted and can be fixed in any angular position by means of a set screw 26.

When the apparatus is used to' make a straight out the yoke is arranged as in Fig.

2, its two rollers and the tractor wheel then constitutin a rolling tripod, so'to speak.

Grasping t e. handle 18 with one hand the operator rotates either crank disk with the other, thereby rotating the tractor-wheel and causing the whole device to travel on the plate, which is indicated at 27. The

in-the 1 plate to cause them to travel in a direction at right anglesqto the sleeve 12, thereby causing the apparatus to carry the blowpipe over the plate in aptraight line.

For cutting an arc, onearm of the yoke 24: is turned up as shown in Fig. 1 and the sleeve 12 is fitted on the end of a radius-bar or beam 28, Fig. 1, having an adjustable center-point 29. The latter 'is'seated in the 1 surface of the plate, with 'the result that when-the apparatus is driven by the tractor wheel it will carry the blow pipe in the arc .ef a ,circle around the point 28 as a center." I

It is to be understood that the invention 'is not. limited to the construction herein specifically illustrated .and described but may be embodied in other forms without departure from its spirit.

I claim: v

1. In a' plate-cutting apparatus, in com bination, a blowpipe, a "tractor wheel to move the same over the plate means for actuatlng the tractor wheel, and supporting and gu ding means for engaging the surface of the plate, said supporting and guiding wardly and rearwardly. disposed arms pivotally mounted at their inner ends to be I revolubly adjusted on a transverse axis, and Hillel's jo-urnaled in the arms to engage the p ate.

3. In a plate-cutting apparatus, in combination, a blowpipe, a tractor Wheel to move the same over the surface of the plate, means for actuating the tractor wheel, a supporting member. arranged transversely of the path of the tractor Wheel and adapted for connection with a radius-rod, and supporting and guiding means carried by said support and revolubly adjustable thereon to permit movement of the apparatus in a straight or curved path'as desired.

4. In a plate-cutting apparatus, in combination, a bloyvpipe, a tractor Wheel to move the same over the plate, means for actuating the tractor wheel, a transverse sleeve connected at one end to the said actuating means and at its'other end adapted to receive a radius-rod, a pair of angularly disposed arms revolubly adjustable on said sleeve, and a pair of supporting and guiding rollers carried by the arms to bear on the surface of the plate.-

In testimony whereof I hereunto afiix my signature.

CHALM-ERS K. BRYCE. 

